import React, { Component } from 'react';
import { connect } from 'react-redux';
import { Link } from 'react-router-dom';
import { CSSTransition } from 'react-transition-group';
import { actionCreators } from './store';
import { actionCreators as loginActionCreators } from '../../pages/login/store'
import {
    HeaderWrapper,
    Logo,
    Nav,
    NavItem,
    NavSearch,
    Addition,
    Button,
    SearchWrapper,
    SearchInfo,
    SearchInfoTitle,
    SearchInfoSwitch,
    SearchInfoItem,
    SearchInfoList
} from './style'

class Header extends Component {
    getListArea() {
        const { focused, list, page, totalPage, mouseIn, handleMouseEnter, handleMouseLeave, handleChangePage } = this.props;
        const newList = list.toJS();
        const pageList = [];
        if (newList.length) {
            for (let i = (page - 1) * 10; i < page * 10; i++) {
                pageList.push(
                    <SearchInfoItem key={newList[i]}>{newList[i]}</SearchInfoItem>
                )
            }
        }

        if (focused || mouseIn) {
            return (
                <SearchInfo
                    onMouseEnter={handleMouseEnter}
                    onMouseLeave={handleMouseLeave}
                >
                    <SearchInfoTitle>
                        热门搜索
                    <SearchInfoSwitch onClick={() => handleChangePage(page, totalPage, this.spinIcon)}>
                            <i ref={(icon) => { this.spinIcon = icon }} className="iconfont spin">&#59473;</i>
                        换一批
                    </SearchInfoSwitch>
                    </SearchInfoTitle>
                    <SearchInfoList>
                        {pageList}
                    </SearchInfoList>
                </SearchInfo>
            )
        } else {
            return null;
        }
    }
    render() {
        const { focused, handleInputFocus, handleInputBlur, list, login, logout } = this.props;
        return (
            <HeaderWrapper>
                <Link to='/'>
                    <Logo />
                </Link>
                <Nav>
                    <NavItem className='left active'>首页</NavItem>
                    <NavItem className='left'>下载App</NavItem>
                    {
                        login ? <NavItem onClick={logout} className='right'>退出</NavItem> : <Link to='/login'><NavItem className='right'>登陆</NavItem></Link>
                    }
                    <NavItem className='right'>
                        <i className="iconfont">&#58881;</i>
                    </NavItem>
                    <SearchWrapper>
                        <CSSTransition in={focused} timeout={500} classNames="slide">
                            <NavSearch
                                className={focused ? 'focused' : ''}
                                onFocus={() => handleInputFocus(list)}
                                onBlur={handleInputBlur}
                            ></NavSearch>
                        </CSSTransition>
                        <i className={focused ? 'focused iconfont zoom' : 'iconfont zoom'}>&#58935;</i>
                        {this.getListArea(focused)}
                    </SearchWrapper>
                </Nav>
                <Addition>
                    <Link to='/write'>
                        <Button className="writting">
                            <i className="iconfont">&#58905;</i>
                            写文章
                        </Button>
                    </Link>
                    <Button className="reg">注册</Button>
                </Addition>
            </HeaderWrapper>
        )
    }
}

const mapStateToProps = (state) => {
    return {
        focused: state.getIn(['header', 'focused']),
        list: state.getIn(['header', 'list']),
        page: state.getIn(['header', 'page']),
        totalPage: state.getIn(['header', 'totalPage']),
        mouseIn: state.getIn(['header', 'mouseIn']),
        login: state.getIn(['login', 'login'])
    }
}

const mapDispathToProps = (dispatch) => {
    return {
        handleInputFocus(list) {
            list.size === 0 && dispatch(actionCreators.getList());
            dispatch(actionCreators.searchFocus());
        },
        handleInputBlur() {
            dispatch(actionCreators.searchBlur());
        },
        handleMouseEnter() {
            dispatch(actionCreators.mouseEnter());
        },
        handleMouseLeave() {
            dispatch(actionCreators.mouseLeave());
        },
        handleChangePage(page, totalPage, spin) {
            let originAngle = spin.style.transform.replace(/[^0-9]/ig, '')
            if (originAngle) {
                originAngle = parseInt(originAngle, 10);
            } else {
                originAngle = 0;
            }
            spin.style.transform = 'rotate(' + (originAngle + 360) + ' deg)';
            if (page < totalPage) {
                dispatch(actionCreators.changePage(page + 1));
            } else {
                dispatch(actionCreators.changePage(1))
            }

        },
        logout() {
            dispatch(loginActionCreators.logout())
        }
    }
}

export default connect(mapStateToProps, mapDispathToProps)(Header);